Male Alopecosa albofasciata, a wolf spider and member of the RTA clade
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Chelicerata
Class:
Arachnida
Order:
Araneae
Infraorder:
Araneomorphae
Clade:
Entelegynae
Clade:
RTA clade
Clades
Dionycha and see text
The RTA clade is a clade of araneomorph spiders, united by the possession of a retrolateral tibial apophysis – a backward-facing projection on the tibia of the male pedipalp.[1] The clade contains over 21,000 species, almost half the current total of about 46,000 known species of spider.[2] Most of the members of the clade are wanderers and do not build webs.[3] Despite making up approximately half of all modern spider diversity, there are no unambiguous records of the group from the Mesozoic and molecular clock evidence suggests that the group began to diversify during the Late Cretaceous.[4]
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^Magalhaes, Ivan L. F.; Azevedo, Guilherme H. F.; Michalik, Peter; Ramírez, Martín J. (February 2020). "The fossil record of spiders revisited: implications for calibrating trees and evidence for a major faunal turnover since the Mesozoic". Biological Reviews. 95 (1): 184–217. doi:10.1111/brv.12559. ISSN 1464-7931. PMID 31713947. S2CID 207937170.
The RTAclade is a clade of araneomorph spiders, united by the possession of a retrolateral tibial apophysis – a backward-facing projection on the tibia...
the evolution and the relationships of selected spiders (Araneae): the RTA-clade, the superfamily Leptonetoidea as well as on the orb-weaving spiders (Araneoidea...
species belong to the RTAclade, a group of spiders linked by the shared morphological trait of the retrolateral tibial apophysis (RTA) on the male pedipalp...
discussed using informal clade names, such as the "RTAclade", the "Oval Calmistrum" clade or the "Divided Cribellum" clade. Older names previously used...
as "ground sac spiders", is within the group of spiders known as the RTAclade, which includes mostly wandering spiders that do not use webs. Spiders...
have shown these two families to form a clade, other studies have not, placing Titanoecidae outside the RTAclade while Phyxelididae is placed inside it...
Clubionidae. The Dionycha are considered to be a subgroup of the larger RTAclade. Most species hunt their prey instead of building webs. There are no cribellate...
within the large RTAclade of araneomorph spiders. Within this clade, Polotow et al. place them within a "grate-shaped tapetum clade", with the family...
traditional subgroup, the Haplogynae, has been shown not to be monophyletic). The clade contains both cribellate and ecribellate spiders. The Entelegynae are characterized...
hypothesis for the phylogeny of the araneomorphs was presented as a clade within the RTAclade. However, they said that placing many families in Dictynoidea...
species, Megadictyna thilenii, found in New Zealand. Similar to many RTAclade spiders, Megadictyna build wheel-shaped orb webs. "Gen. Megadictyna Dahl...
projection on the tibia of the male pedipalp; distinguishing feature of the RTAclade Retromarginal: The side of the cheliceral furrow facing backward (towards...
Orbiculariae is a potential clade of araneomorph spiders, uniting two groups that make orb webs. Phylogenetic analyses based on morphological characters...
Cycloctenidae in a clade with members of Agelenidae, Amphinectidae (now Desidae) and Desidae, as sister to the rest of the large RTAClade. (Amaurobiidae...
the evolution and the relationships of selected spiders (Araneae): the RTA-clade, the superfamily Leptonetoidea as well as on the orb-weaving spiders (Araneoidea...
phylogeny groups Eresoidea and Palpimanoidea into a single clade, sister to the "canoe tapetum clade" holding the remaining entelegynes. Other studies, particularly...
Trochanteriidae Gnaphosoidea has been placed in the Dionycha clade, itself part of the RTAclade: The Prodidomidae, Lamponidae and Gnaphosidae have been considered...
on the superfamilies Palpimanoidea and Deinopoidea and members of the RTA-clade, as well as remarks on palaeobehaviour, palaeofauna, taxonomy and phylogenetics"...
on the superfamilies Palpimanoidea and Deinopoidea and members of the RTA-clade, as well as remarks on palaeobehaviour, palaeofauna, taxonomy and phylogenetics"...
on the superfamilies Palpimanoidea and Deinopoidea and members of the RTA-clade, as well as remarks on palaeobehaviour, palaeofauna, taxonomy and phylogenetics"...
fell into two groups. The largest group formed the sister clade to the "grate-shaped tapetum clade" (see the cladogram below). The type genus, Zorocrates...
on the superfamilies Palpimanoidea and Deinopoidea and members of the RTA-clade, as well as remarks on palaeobehaviour, palaeofauna, taxonomy and phylogenetics"...
more than 1 metre (3 ft 3 in) in diameter. The family belongs to the RTAclade of spiders because they all have a Retrolateral Tibial Apophysis on the...
the evolution and the relationships of selected spiders (Araneae): the RTA-clade, the superfamily Leptonetoidea as well as on the orb-weaving spiders (Araneoidea...
the evolution and the relationships of selected spiders (Araneae): the RTA-clade, the superfamily Leptonetoidea as well as on the orb-weaving spiders (Araneoidea...
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